EP1735803A1 - Dispositif de commutation - Google Patents

Dispositif de commutation

Info

Publication number
EP1735803A1
EP1735803A1 EP05733573A EP05733573A EP1735803A1 EP 1735803 A1 EP1735803 A1 EP 1735803A1 EP 05733573 A EP05733573 A EP 05733573A EP 05733573 A EP05733573 A EP 05733573A EP 1735803 A1 EP1735803 A1 EP 1735803A1
Authority
EP
European Patent Office
Prior art keywords
contact carrier
switching device
current
switching
movable contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05733573A
Other languages
German (de)
English (en)
Other versions
EP1735803B1 (fr
Inventor
Wolfgang Leitl
Christian Pohle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1735803A1 publication Critical patent/EP1735803A1/fr
Application granted granted Critical
Publication of EP1735803B1 publication Critical patent/EP1735803B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections

Definitions

  • the invention relates to a switching device according to claim 1
  • a switching device is generally part of a switching or protective holding device and is used for the targeted separation or connection of one or more current paths under operating or fault conditions.
  • a neutral conductor can also be switched in such devices.
  • a load located in a current path for example a consumer, should in operation or in the event of a fault only under load in the current path of the associated phase conductor and therefore almost load-free - that is to say at a current which is small in relation to the rated current of the corresponding switching device - are switched in the current path of the neutral conductor.
  • the object of the invention is to create a switching device which, with simple means, ensures a time-delayed disconnection of an almost load-free switching point.
  • a current flow direction that is in the same direction as the current conductor can be achieved with current flow, so that an actuating force of an energy store acting on the movable contact carrier is achieved by a current flow conditional electromagnetic retention force in the sense of an electrodynamic bondage effect due to an associated common magnetic field on the conductor and on the movable contact carrier is influenced and thereby a time-delayed separation of a switching point is achieved with simple means.
  • a load connected to an at least two-pole switching device is accordingly first switched in the current path of the associated phase conductor and only after a time delay in the current path of the neutral conductor.
  • This ensures that an arc quenching chamber arranged in the area of the switching point associated with the phase conductor, if appropriate in conjunction with high-quality contact materials and other measures which favor load separation, provides a reliable and rapid disconnection of the current path.
  • Complex measures such as a separate arc quenching chamber for the switching point in the current path of the neutral conductor, erosion-resistant contact materials, contact pressure springs or a separate trigger for the movable contact arm can thus be saved due to the load-free contact opening.
  • the current conductor is advantageously arranged essentially parallel to the latter, so that a magnetic field extending over these parallel component regions generates a sufficiently high retention force.
  • the current conductor is advantageously mounted fixed to the housing, as a result of which there is a fixed mounting with respect to the movable contact carrier and thus a guarantee for permanent functionality.
  • the current conductor is advantageously constructed in a step-like manner, in particular as a stamped and bent part; A component designed as a stamped and bent part can be manufactured particularly efficiently and economically.
  • the current conductor is advantageously designed together with a current path to form a one-piece conductor loop, as a result of which an easily producible and simple current supply is realized.
  • FIGS. 2 to 9 different embodiments of a conductor loop provided as part of the switching device in different representations.
  • the switching device 1 shows a switching device 1 with a housing 2, which has a switching device 3 with a switching point 4 for the current path of a neutral conductor N and with a further switching point 5 for the further current path of a phase conductor P.
  • the current paths of the neutral conductor N and of the phase conductor P are each led at the ends to schematically illustrated connection terminals 6 and 7, so that on the one hand a current source and on the other hand a load, in particular a consumer, can be connected.
  • the group of single or multi-pole switching devices includes both contactors,
  • the switching point 4 of the neutral conductor N is composed of a fixed contact 8 and a moving contact 9.
  • the fixed contact 8 is placed on a fixed contact carrier 10, which is part of a G-shaped current path 11.
  • the Current path 11 in turn merges into a current conductor 12 crossing it, thereby creating a one-piece conductor loop 11, 12.
  • the current conductor 12 is fixed to the housing at selected points by brackets 13 and is designed in a step-like manner.
  • the moving contact 9 of the switching point 4 of the neutral conductor N is located on a movable contact carrier 14, which is shown in its closed position according to FIG. 1.
  • the current conductor 12 runs close and essentially parallel to the movable contact carrier 14, while the current path 11 is arranged at a distance from the current conductor 12 and the movable contact carrier 14.
  • the movable contact carrier 14 is rotatably mounted on an axis 15 and can thus be pivoted into an open position shown in broken lines.
  • the movable contact carrier 14 is connected to a flexible line 16, in particular to a stranded wire, which in turn is in an electrically conductive connection with the current path of the neutral conductor N.
  • the movable contact carrier 14 can be acted upon indirectly via the actuating unit 17 with an actuating force F3 — shown as an effective line.
  • the actuating unit 17 is designed as a switching mechanism, in particular as a switching lock.
  • the triggering force F1 simultaneously acts on a further movable contact carrier 19, which is provided with a further moving contact 20 and is mounted on the same axis as the movable contact carrier 14.
  • the movable contact carriers 14, 19 can also be mounted on separate axes.
  • the further switching point 5 is formed for the current path of the phase conductor P.
  • the current path of the phase conductor P extends on the side of the further fixed contact carrier 21 over a NEN ear-shaped area up to a schematically illustrated arc quenching chamber 23.
  • this On the side of the movable contact carrier 19, this also has a strand corresponding to the flexible line 16, which leads to a change of the movable contact carrier 19 from a closed to an open position while maintaining an electrical position conductive connection to the current path of the phase conductor P allowed.
  • a current I - shown schematically by means of current flow arrows - flows in the current path of the phase conductor P via the further fixed contact carrier 21, via the further switching point 5 having the two contacts 20, 22, via the further movable contact carrier 19 and ultimately
  • the circuit can be completed via the stranded wire up to a section of the phase conductor P which is fixed to the housing by means of a consumer which is connectable between the end of the phase conductor P and the beginning of the neutral conductor N, the symbolized return flow of the current I via the flexible Line 16, the movable contact carrier
  • the trigger force F1 acts equally on the further movable contact carrier 19 and on the actuating unit 17. While the further movable contact carrier 19 then pivots from its closed position into its open position, the actuating unit 17 designed as a switching mechanism is unlatched by the triggering force Fl, so that the movable contact carrier 14 due to an energy store, not shown here, for example in the form of a switching spring, and the resulting actuation force F3 tends to change from its closed position to its open position.
  • the switch spring can be part of the eye hold mechanism.
  • the tearing open of the further switching point 5 is supported by an electrodynamic effect which is given on the basis of the current flow directions on the further fixed contact carrier 21 and the further movable contact carrier 19.
  • the electrodynamic effect comes into play in the form of a repulsive force F2 insofar as components arranged adjacent to one another and through which current flows in opposite directions repel each other. Since the current I, as shown in FIG. 1, has to pass a U-shaped path in the region of the further switching point 5, the further movable contact carrier 19 is repelled relative to the further fixed contact carrier 21 by means of the magnetic fields which arise and act differently.
  • the current I is conducted approximately in a straight line via the switching point 4 due to the U-shaped configuration of the fixed contact carrier 10 according to FIG. 1 and subsequently passes through the conductor loop 11, 12.
  • the current conductor 12, which is designed as part of the conductor loop 11, 12, runs parallel and at a short distance from the movable contact carrier 14, which results in the same direction of current flow. Since components through which current flows in the same direction attract each other due to an equivalent magnetic field, a significant electrodynamic effect can be used here. However, this electrodynamic effect is expressed by a retention force F4 which counteracts the actuation force F3 in such a way that the actuation force F3 is reduced.
  • Switching point 5 of the phase conductor P occurs in the form of a repulsive force F2, vice versa and as a restraining or holding force F4 can be used.
  • This measure means that the switching point 4 is separated by the lagging of the movable contact carrier 14 with respect to the further movable contact carrier 19 only after the further switching point 5, and thus the load-bearing phase conductor P is first disconnected and then the load-free neutral conductor N is disconnected ,
  • an arc that arises when the switching device 1 is actuated or triggered during load operation in compliance with the specified switching sequence, only loads the further switching point 5 of the phase conductor P, which is provided with the arc extinguishing chamber 23, which is present anyway, in order to extinguish the arc as quickly as possible. Since no arc arises at the switching point 4, the structure of the current path of the neutral conductor N can be carried out with simpler means compared to that of the phase conductor P; this includes a smaller contact volume, cheaper contact materials, smaller conductor cross-sections and the avoidance of both a separate trip unit and an own arc quenching chamber.
  • the size of the retention force F4 depends on the level of the current I; the higher the current I to be switched, the greater the restraining force F4, since the current intensity is a measure of the strength of the magnetic field captivating the movable contact carrier 14 to the current conductor 12.
  • the retention force F4 is determined by the length and the distance of the current conductor 12 arranged approximately parallel to the movable contact carrier 14 which is in the closed position; the longer the current conductor 12 runs parallel to the movable contact carrier 14 and the smaller the non-contact distance between these components, the greater the retention force F4.
  • the construction of the switching device 1 can be carried out in such a way that, when the switching contact 4 switches on, the movable contact carrier 14 of the switching point 4 brings its moving contact 9 earlier into the closed position with its associated fixed contact 8 than the further moving contact carrier 19 places its further moving contact 20 on the further fixed contact 22 ,
  • the contact distance between the fixed and moving contacts 8 and 9 of the switching point 4 can be set to be structurally smaller than the contact distance between the fixed and moving contacts 20 and 22 of the further switching point 5.
  • 2 and 3 or 4 and 5 a conductor loop 11, 12, which is determined as part of the switching device, is shown in a flat and in a perspective representation.
  • the conductor loop 11, 12 has as a one-piece unit on the one hand the two-step angled current conductor 12 and on the other hand the double-angled current path 11, which is provided at its free end with the fixed contact carrier 10.
  • the conductor loop 12 or each of its components can be stored in a housing-fixed manner.
  • the current path 11 is approximately G-shaped and, as shown in FIG. 3, can be produced, for example, as a stamped and bent part from the base material of the current path 12.
  • the current supply given the position and shape of the conductor loop 11, 12 in relation to the movable contact carrier 14 according to FIG. 1 ensures the desired electrodynamic effect which produces the retaining force F3.
  • Current path 11 according to FIGS. 6 and 7 has an approximately S-shaped shape, while according to FIGS. 8 and 9 an L shape is provided for current path 11.
  • the movable contact carrier 14 is assigned in the closed position to the current conductor 12, which is in an electrically conductive connection with the fixed contact carrier 10 and has a current flow direction in the same direction as the movable contact carrier 14, such that the force acting on the movable

Landscapes

  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

L'invention vise à mettre en oeuvre un dispositif de commutation (3) garantissant une séparation de la zone de commutation (4) au moyen d'éléments simples. A cet effet, le porte-contact mobile (14) est affecté au conducteur de courant (12) en position fermée, se trouvant en connexion électrique avec le porte-contact fixe (10) et présentant un flux de courant identique à celui du porte-contact mobile (14). Ainsi, l'effet de la force d'actionnement (F3) de l'accumulateur d'énergie, s'exerçant sur le porte-contact mobile (14), est réduit par l'effet de la force de retenue électromagnétique (F4) due au flux de courant, et il y a un changement retardé de la position d'ouverture.
EP05733573A 2004-04-15 2005-04-05 Dispositif de commutation Not-in-force EP1735803B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410018275 DE102004018275B4 (de) 2004-04-15 2004-04-15 Schaltgerät
PCT/EP2005/051520 WO2005101435A1 (fr) 2004-04-15 2005-04-05 Dispositif de commutation

Publications (2)

Publication Number Publication Date
EP1735803A1 true EP1735803A1 (fr) 2006-12-27
EP1735803B1 EP1735803B1 (fr) 2010-10-06

Family

ID=34964590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05733573A Not-in-force EP1735803B1 (fr) 2004-04-15 2005-04-05 Dispositif de commutation

Country Status (7)

Country Link
EP (1) EP1735803B1 (fr)
CN (1) CN100541689C (fr)
BR (1) BRPI0509880A (fr)
DE (2) DE102004018275B4 (fr)
ES (1) ES2353525T3 (fr)
RU (1) RU2363066C2 (fr)
WO (1) WO2005101435A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006036194B4 (de) * 2006-08-01 2019-09-26 Siemens Aktiengesellschaft Schaltvorrichtung mit Schaltstellenpaar
DE102008015196B4 (de) * 2008-03-20 2009-11-19 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung für ein Schaltgerät, Schaltgerät mit Lichtbogen-Löschvorrichtung sowie Verfahren zum Herstellen einer Lichtbogen -Löschvorrichtung
DE102009007369B3 (de) * 2009-02-04 2010-06-24 Siemens Aktiengesellschaft Anordnung aus einem Griffverbinder und mehreren Elektroinstallationsgeräten sowie Griffverbinder zur mechanischen Kopplung mehrerer Betätigungselemente
EP2393096B1 (fr) * 2010-06-07 2013-02-13 ABB Schweiz AG Appareil de commutation basse tension pouvant être interrompu facilement, notamment commutateur de protection de ligne
EP2919254B1 (fr) * 2012-11-12 2020-02-26 Seari Electric Technology Co., Ltd. Dispositif de protection contre les surtensions ayant une fonction de protection contre les courants de court-circuit
DE102014012454B4 (de) * 2014-08-21 2023-06-22 Schaltbau Gmbh Schaltschütz mit Schnellschalteigenschaften
CN112635263B (zh) * 2020-12-30 2022-09-13 滁州博杰科技有限公司 一种电磁辅助断路器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1776082U (de) * 1955-08-11 1958-10-23 Voigt & Haeffner Ag Selbstschalter mit abschaltbarem nulleiter.
DE1062327B (de) * 1958-10-28 1959-07-30 Licentia Gmbh Schalteinrichtung z. B. fuer Stromversorgungs- bzw. Verteilanlagen mit selektiv ansprechenden Leistungsschaltern fuer Kurzschlussstromstaerken
GB1053936A (fr) * 1964-08-01
DE3242062A1 (de) * 1982-11-13 1984-05-17 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer schalter
FR2582857B1 (fr) * 1985-05-29 1989-04-28 Merlin Gerin Disjoncteur unipolaire et neutre a effet shunt
US4849590A (en) * 1988-04-01 1989-07-18 Kohler Company Electric switch with counteracting electro-electro-dynamic forces
DD273331A1 (de) * 1988-06-23 1989-11-08 Oppach Schaltelektronik Anordnung zur erhoehung der kurzschlussfestigkeit an doppelunterbrechenden, unverklinkten schaltgeraeten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005101435A1 *

Also Published As

Publication number Publication date
BRPI0509880A (pt) 2007-12-18
DE502005010339D1 (de) 2010-11-18
ES2353525T3 (es) 2011-03-02
DE102004018275A1 (de) 2005-11-03
DE102004018275B4 (de) 2007-10-18
RU2006140239A (ru) 2008-05-20
CN100541689C (zh) 2009-09-16
WO2005101435A1 (fr) 2005-10-27
EP1735803B1 (fr) 2010-10-06
CN1942988A (zh) 2007-04-04
RU2363066C2 (ru) 2009-07-27

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